SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492016-12-09T20:16:06-07:00SparkFun ElectronicsCustomer #731456 on COM-09997 - Red Knob - 15x19mmCustomer #731456urn:uuid:35d58999-0d7e-6626-b0de-92a841b1cd5c2015-10-25T00:32:32-06:00<p>I&rsquo;m disappointed I can&rsquo;t get these to go with my resistance box after seeing the red knobs featured in the tutorial page!</p>